Blue-print machine.



A. R. MURRAY.

BLUE PRINT MACHINE.

APPLIGATION FILED nmz?, 190s.

Patented Feb. 15, 1910.

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' A. R.. MURRAY. BLUE PRINT MACHINE. APPLICATION FILBDJANJ'IA, 1908.

Patented Feb. 15, 1910.

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A. R. MURRAY= BLUE PRINT MACHINE.

APPLICATION FILED ulm?, 1908.

949,084. Patented Feb.15,191o.

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ARISTIDES R. MURRAY, F CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF TO CHARLESF. PEASE, OF CHICAG, ILLINOIS.

BLUE-PRINT MACHINE.

To all whom 'it may concer/n:

Be it known that I, Anrsrrnns R. MURRAY, a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Blue-PrintMachines, of which the following is a specification.

My invention relates to blue print machines and particularlycontemplates the provision of a simple, compact and inexpensivestructure comprising a relatively stationary blue print frame, and asuitable light of the necessary strength mounted to move across the faceof the frame or frames, together with means for moving said light andmeans for regulating the speed of its travel, the object in view beingto complete the print when the light has reached its limit of travel.

My invention further and speciicially resides in the following featuresof construction; arrangement and operation as will be hereinafterdescribed with reference to the accompanying drawings forming a part ofthis specitication in which like numerals are used to designate likeparts throughout the several gures, and in which,

Figure l is a top plan view of my improved apparatus, Fig. 2 is a frontelevation thereof, Fig. 3 is an end elevation of the same, Fig. 4 is aplan view of a modified form of drive mechanism. Fig. 5 is a sideelevation of the drive belt and the operating member carried therebyand. used in the form illustrated in Fig. 4t, Fig. 6 is a frontelevation of a modified form of blue printing apparatus, Fig. 7 is asectional view, broken away, and taken through the same on the line 2 2of Fig. 6, and Fig. S is an end view of the carriage shown in Figs. 1, 2and 3 and illustrating the engagement of its threaded member with theoperating bar.

In the practical embodiment of my invention, and with particularreference to Figs. l to 3 inclusive, I provide a frame l comprisingspaced end members 1,connected at. their upper and lower ends bytransverse supporting rods 2 and 3 respectively, and provided with rods4 therebetween intermediate the upper and lower transverse rods 2 and 3,said rods l serving to support the ordinary blue print frames 5 by meansof hangers 6.

Mounted on the upper transverse rod 2 is Specification of LettersPatent.

Application filed January 27, 1908.

Patented Feb. 15, 1910.

Serial No. 412,861.

a carriage 7 adapted to travel thereon and having pairs of wheelsdisposed on opposite sides of said rod 2, and a lamp box 8 pivotallysecured at 9 thereon and held in a vertical position by means of a catch10, said lamp box being located between the opposing frames 5, asclearly shown in Fig. 3.

An operating screw bar ll is journaled through the end members l of theframe and is engaged by a. threaded half nut l2 pivotally mounted onthe'carriage 7 to move the same along' its support upon the rotation ofsaid bar ll. The operating screw bar l1 is provided with a pulley 13lixedly secured at one end of said shaft outside the frame and arrangedto be connected by means of a belt 14C to one of a pair of speedchanging cone pulleys l5, rotatively mounted on short shafts extendingfrom one of the end members l said cone pulleys being driven in turn bya belt 1G from a pulley 17 fixedly secured upon a shaft of a small motoror the like 18. It will thus be seen that the speed at which thecarriage Tis reciprocated, may be regulated by adjusting the connectingbelt between the cone pulleys 15.

The blue print frames 5 are swingingly mounted upon their supportingrods as before stated, and said frames are provided with supplementalsupporting rods 19 pivotally secured upon the frame l, and provided withhooked ends for engaging said frames to hold the same in a horizontalposition, as shown in dotted lines in Fig. 3. This is to enable theoperator to substitute new material within the frames when it isdesired.

The lamp box 8 is provided with mercury vapor 20 of the ordinary type tosupply the necessary light, and in operation, the frames 5 having beendropped to the position shown in full lines in Fig. 3, the motor isstarted and the carriage 7 caused to move between the frames 5 andacross the faces thereof, by means of the screw bar ll and the threadedhalf nut 12. and at such a speed as to produce a iinished print when thelamps have passed beyond the other end of the frames. The half nut isthen raised. stopping the actuation of the carriage 7 and after newmaterial has been substituted within the frames, the carriage is runback by the operator, the half nut l2 dropped to engage bar ll and theprinting is repeated.

In the modified forms shown in Figs. el

and 5, the carriage 7 is provided with a top frame 21, having a recessformed therein at right angles to said carriage for the reception of anoperating member 23 secured upon an endless belt 241 traveling betweenshort vertical shafts 25 mounted upon the frame of the machine. 'Iheshafts 25 may either one be rotated by means of a worm wheel 26 mountedupon one of them, and with which a worm 27 formed upon one end of thehorizontal shaft 28, which shaft 28 carries upon its outer end a speedchanging cone pulley 29. It will be seen that the same result-will beaccomplished by this construction inasmuch as the carriage 7 will bemoved along its rod 2 by means of the member 23 engaging within therecess 22, upon the rotation of the belt 2/1.

In the modified form shown in Figs. 6 and 7 I provide a supporting framecomprising end uprights 1, having horizontal support--v ing bars 2 and 3arranged between the upper and lower ends thereof respectively. Theuprights 1 are further provided with a horizontal rod 4 intermediatetheir length, upon which a blue print frame 5, of the ordinaryconstruction is pivotally hung by the hangers 6, and is adapted to beswingingly adjusted upon said rod 4 as its pivot, in order to obtain therays of light thereon at a desired angle. Above the frame 5, between itsrod 4 and the upper supporting bar 2, of the frame are arranged upperand lower horizontal supporting bars 7X and 8 respectively, along whicha plurality of rollers 9 are mounted in relative staggered relation, andare arranged to receive therein an endless belt 10 trained in a tortuousmanner over and under the opposing rollers 9 of the upper and lower setsrespectively, and over rollers 11 and 12 respectively, mounted in themain frame above the upper set of rollers 9. The roller 12 constitutes adrive roller for said belt 10 and is driven from a horizontal shaft 13having a. cone pulley 14 mounted on its end outside the main frame. Thecone pulley 141 has a second cone pulley 15 mounted below and connectedwith the same by a belt 16 adapted to be adjusted upon said pulleys toregulate the speed at which the roller 12 is driven. The pulley 15 hasconnection by a belt 17 or the like with a suitable motor 18 mounted ata convenient point within the main frame. The endless belt 10 isprovided at a suitable point thereon with a metallic plate 19 having apin 20 projecting outwardly beyond the edge of said belt and adapted toengage within a central opening adjacent the top of the lamp frame 21,said lamp frame carrying thereon suitable carbon lights 22, and beingadapted to follow the movement of the endless belt 10 and to therebytake a tortuous path across the face of the blue print frame 5, andfollow said belt upwardly over the rollers 11 and 12 to the startingpoint. The print within the frame 5 will be completed by the time thelight 22 has passed over the entire surface thereof, and said frame maybe swung to a horizontal position on its hangers 6' by means of theadjusting rods 23, and fresh material substituted while said lamp ispassing again to the starting point. The lamp 21 in its movement acrossthe face of the blue print frame 5 is steadied and balanced by means ofa carriage 21 having rollers superposed upon the upper horizontal bar 2of the main frame and having rollers 25 below said ruiming rollers, overwhich a rope 26 is trained and is connected at its end 27 to said lampframe and is connected at its other end to a counter-balancing weight28. From the foregoing it will be understood that in this form the frame5 may, by means of the rods 23, be adjusted at a desired angle to thelight 22, and that said light in its tortuous passage across the face ofsaid frame will be steadied and balanced by the rolling carriage and itsweighted rope attachment.

Having thus fully described my invention, what I claim is:

1. A blue printing machine comprising a stationary upright frame, a blueprint frame mounted within said frame to swing in a vertical plane, alamp mounted to move across the face of said blue print frame, means formoving said lamp, embodying a pair of grooved cone pulleys and a beltconnecting said pulleys, whereby the speed of said means may beregulated, and the movement thereof reversed, by twisting the belt,substantially as described.

2. A blue printing machine comprising a stationary frame, a blue printframe mounted therein, a carriage mounted to travel within said frame, alamp box carried by said carriage to move across the face of said blueprint frame, a motor mounted within said stationary frame, a rotatingelement also mounted therein, means carried by said carriage and looselydetachably engaging said element, whereby the lamp box may be stoppedwithout stopping the motor and vthe rotating element, and speedadjusting means connecting said motor and said element, substantially asdescribed.

In testimony whereof I affix my :signature

